Aerosol‐deposited Al<sub>2</sub>O<sub>3</sub>/PTFE hydrophobic coatings with adjustable transparency

Kim, Iksoo; Cho, Myung‐Yeon; Jeong, Yohan; Shin, Yun-Cheol; Lee, Dongwon; Park, Chulhwan; Koo, Sang‐Mo; Shin, Weon Ho; Yang, Wonjik; Park, Yeol; Sohn, Hiesang; Oh, Jong‐Min

doi:10.1111/jace.17609

Cited by 8 publications

(1 citation statement)

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“…Although several techniques were used to fabricate superhydrophobic surfaces with self-cleaning behavior using various materials, only a few works were reported using Al 2 O 3 nanoparticle-based nanocomposites for superhydrophobic and self-cleaning coatings [22,30,31]. Al 2 O 3 based composites are highly useful in coating applications due to the abundant availability of the Al source and its antibacterial characteristics [32].…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Al2O3–Polymer Composite Coating for Self-Cleaning Applications

et al. 2021

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Superhydrophobic coatings have a huge impact in various applications due to their extreme water-repellent properties. The main novelty of the current research work lies in the development of cheap, stable, superhydrophobic and self-cleaning coatings with extreme water-repellency. In this work, a composite of hydrothermally synthesized alumina (Al2O3), polymethylhydrosiloxane (PMHS) and polystyrene (PS) was deposited on a glass surface by a dip-coating technique. The Al2O3 nanoparticles form a rough structure, and low-surface-energy PHMS enhances the water-repellent properties. The composite coating revealed a water contact angle (WCA) of 171 ± 2° and a sliding angle (SA) of 3°. In the chemical analysis, Al2p, Si2p, O1s, and C1s elements were detected in the XPS survey. The prepared coating showed a self-cleaning property through the rolling action of water drops. Such a type of coating could have various industrial applications in the future.

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Section: Introductionmentioning

confidence: 99%

Superhydrophobic Al2O3–Polymer Composite Coating for Self-Cleaning Applications

et al. 2021

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Powder Aerosol Deposition and Polymers: Is There Hope for a Common Future?

Thiel,

Lienkamp

2024

Adv Eng Mater

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Polymer‐Ceramic Composites (PCC) are promising functional materials with a wide range of applications in energy technology, microelectronics and sensor technology, as protective coatings, in wastewater treatment or for biomedical purposes. Unfortunately, ceramics require high‐temperature sintering, while polymers only have a limited thermal stability. Therefore, PCC fabrication is quite complex and requires strict process control. This severely limits the efficiency and economy of the process, and the reproducibility of the desired materials properties. Powder Aerosol Deposition (PAD) is a spray coating process in which ceramic powders are accelerated by a pressure difference using a carrier gas. They are then deposited as nanocrystalline, dense coatings onto different kinds of substrates without the need for additional sintering. Current research focuses on materials obtained from PAD of ceramic powders. Yet there are also examples of mixed polymer and ceramic particles that have been successfully deposited in PAD processes. So far, much of this works does not go beyond the trial‐and‐error stage, so that a general concept for successful deposition of PCCs by PAD is not yet available. This review revisits the fundamentals of the PAD process and its most important process parameters that were studied experimentally and in‐silico. It connects these with recent work on the combination of polymers and ceramics in the PAD process in order to highlight and evaluate the future of this field from a polymer science perspective.This article is protected by copyright. All rights reserved.

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